51938679191 has 8 divisors (see below), whose sum is σ = 62850166560. Its totient is φ = 41900110848.

The previous prime is 51938679181. The next prime is 51938679193. The reversal of 51938679191 is 19197683915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51938679191 - 2⁶ = 51938679127 is a prime.

It is a super-3 number, since 3×51938679191³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51938679191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51938679193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218229626 + ... + 218229863.

It is an arithmetic number, because the mean of its divisors is an integer number (7856270820).

Almost surely, 2^51938679191 is an apocalyptic number.

51938679191 is a deficient number, since it is larger than the sum of its proper divisors (10911487369).

51938679191 is a wasteful number, since it uses less digits than its factorization.

51938679191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436459513.

The product of its digits is 3674160, while the sum is 59.

The spelling of 51938679191 in words is "fifty-one billion, nine hundred thirty-eight million, six hundred seventy-nine thousand, one hundred ninety-one".